The Scroll | The Architect

Hoppy discovers a massive library deep in the fortress. The shelves are filled with "Scrolls" (Modules).

Why write a spell from scratch when an ancient wizard has already perfected it?

The `import` Spell

To use a scroll from the library, you must import it first. Then you can use its powers by saying scroll_name.spell_name.

import math

print(math.pi)    # 3.14159...
print(math.sqrt(16)) # Square root: 4.0

Import math

At the top of your code, type import math.

Use the power of Pi

The formula for a circle's area is $\pi r^2$. Change area = 0 to use math.pi * radius * radius.

There are thousands of scrolls (modules) in the Python library. math, random, time, json... unlimited power!

Suggested Solution

Expand

Solution:

import math # Step 1: Import the scroll

radius = 5
# Step 2: Use the formula pi * r^2
area = math.pi * radius * radius

print("Area of the circle: " + str(area))

Advanced Tips

Want more? Click to expand

F. Standard Library

Python comes with "batteries included". This means you get tons of powerful modules (scrolls) for free instantly.
You don't need to download math, it's already there waiting for you.

The import Spell

F. Standard Library

The `import` Spell